English

New $\Lambda_b(6072)^0$ state as a $2S$ bottom baryon

High Energy Physics - Phenomenology 2020-08-12 v2 High Energy Physics - Experiment High Energy Physics - Lattice

Abstract

As a result of continuous developments, the recent experimental searches lead to the observations of new particles at different hadronic channels. Among these hadrons are the excited states of the heavy baryons containing single bottom or charmed quark in their valance quark content. The recently observed Λb(6072)0\Lambda_b(6072)^0 state is one of these baryons and possibly 2S2S radial excitation of the Λb\Lambda_b state. Considering this information from the experiment, we conduct a QCD sum rule analysis on this state and calculate its mass and current coupling constant considering it as a 2S2S radially excited Λb\Lambda_b resonance. For completeness, in the analyses, we also compute the mass and current coupling constant for the ground state Λb0\Lambda_b^0 and its first orbital excitation. We also consider the Λc+\Lambda_c^+ counterpart of each state and attain their mass, as well. The obtained results are consistent with the experimental data as well as existing theoretical predictions.

Keywords

Cite

@article{arxiv.2005.06772,
  title  = {New $\Lambda_b(6072)^0$ state as a $2S$ bottom baryon},
  author = {K. Azizi and Y. Sarac and H. Sundu},
  journal= {arXiv preprint arXiv:2005.06772},
  year   = {2020}
}

Comments

9 Pages, 3 Figures and 2 Tables

R2 v1 2026-06-23T15:32:17.933Z